| PRECIPITATION HARDENING OF ELINVAR ALLOY |
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| 作者姓名： | LIU Zhiguo CHEN Yong CAO Yanni Nanjing University Nanjing ChinaZHU Zhengsheng Shaanxi Iron and Steel Institute Xi'an China Professor Dept.of Physics Nanjing University Nanjing China |
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| 作者单位： | LIU Zhiguo CHEN Yong CAO Yanni Nanjing University，Nanjing，ChinaZHU Zhengsheng Shaanxi Iron and Steel Institute，Xi'an，China Professor，Dept.of Physics，Nanjing，University，Nanjing 210008，China |
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| 摘 要： | The microstructural evolution and precipitation hardening of an Elinvar alloy doped with Ti and Al during isothermal aging at 700℃ have been investigated by atom probe field ion microscopy and microhardness measurements.The γ′ precipiates are spherical and coherent with the matrix.The chemical composition of the precipitates are(Ni_(0.53)Fe_(0.47)_3 (Ti_(0.(?))Al_(0.4)). During aging,a Lifshitz-Wagner type dissolution and coarsening reaction of the precipitates has been observed,The hardness of the material varies with the aging time and reaches maxi- mum when the average diameter of the precipitates was about 11 nm.
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| 关 键 词： | Elinvar alloy atom probe field ion microscope γ-phase precipitation hardening atom probe selected area analysis |
| 收稿时间： | 1991-02-25 |
| 修稿时间： | 1991-02-25 |
PRECIPITATION HARDENING OF ELINVAR ALLOY |
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| LIU Zhiguo CHEN Yong CAO Yanni Nanjing University,Nanjing,ChinaZHU Zhengsheng Shaanxi Iron and Steel Institute,Xi''''an,China Professor,Dept.of Physics,Nanjing,University,Nanjing ,China.PRECIPITATION HARDENING OF ELINVAR ALLOY[J].Acta Metallurgica Sinica(English Letters),1991,4(1):33-36. |
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| Authors: | LIU Zhiguo CHEN Yong CAO Yanni Nanjing University Nanjing ChinaZHU Zhengsheng Shaanxi Iron and Steel Institute Xi'an China Professor Deptof Physics Nanjing University Nanjing China |
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| Abstract: | The microstructural evolution and precipitation hardening of an Elinvar alloy doped with Ti and Al during isothermal aging at 700℃ have been investigated by atom probe field ion microscopy and microhardness measurements.The γ′ precipiates are spherical and coherent with the matrix.The chemical composition of the precipitates are(Ni_(0.53)Fe_(0.47)_3 (Ti_(0.(?))Al_(0.4)). During aging,a Lifshitz-Wagner type dissolution and coarsening reaction of the precipitates has been observed,The hardness of the material varies with the aging time and reaches maxi- mum when the average diameter of the precipitates was about 11 nm. |
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| Keywords: | Elinvar alloy atom probe field ion microscope γ-phase precipitation hardening atom probe selected area analysis |
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